Single lever saw swage



July 7, 1953 o. DABOLL SINGLE LEVER sAw SWAGE INVENTOR.

2 Sheets-Sheet 1 Dan Dabo II Filed Sept. 7, 1951 July 7, 1953 D. DABOLL SINGLE LEVER SAW SWAGE 2 Sheets-She et 2 Filed Sept. 7, 1951 8 8 x a m 4 w m m II M w w mw. u m n .H i g 5 5 m a m 4 .a. m H m 8 6 w 4 8 3 6 Dan Dabal/ INVENTOR.

Patented July 7 1953- UNITED STATES PATENT OFFICE I v 2,c44,341

SINGLE LEVER sAW swAG'E Don DabclL Durango, Colo. I Application September 7, 1951, Serial No. 245,475,

8 Claims. 1

This invention relates to new and useful improvements in saw swages and the primary object of the present invention is to provide a saw swage including a single lever for actuating a clamping means and a die and thereby avoiding the necessity of employing a lever for the V clamping means and a second lever for operating the die.

Another important object of the present invention is to provide a saw swage including a clamping means and a die that are both operatively connected to. a single lever whereby'the clamping means and die will be actuated in sequence'as the lever is swung in one direction.

A further object of the present invention is to provide a saw swage so constructed as to avoid the heretofore four step operation of a two lever saw swage through the medium of a single lever and novel and improved means operatively connecting the lever to a clamping means and a die holder.

A still further aim of the present invention is to provide a saw swage of the aforementioned character that is simple and practical in construction, strong and reliable in use, small and compact in structure, efficient and durable in operation, inexpensive to manufacture, service and assemble, and otherwise well adapted for the purposes for which the same is intended.

Other objects and advantages reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming part hereof; wherein like numerals refer to like parts throughout, and in which:

Figure 1 is a perspective view of the invention showing theoperating handle in a back position;

Figure 2 is a side view taken from the other side of Figure 1 and showing the lever in a front position;

Figure 3 is a view similar to Figure 2 but showing the lever in a back position;

Figure 4 is an enlarged detail vertical sectional view taken substantially on the plane of section line 4-4 of Figure 2; and,

Figure 5 is an enlarged detail vertical sectional view taken substantially on the plane of section line 5-5 of Figure 4.

' radial slot l2 that will accommodate the toothed edge E of a saw S.

.block ill by fasteners I8 that extend througharcuate slots 20 in the plate l4 to receivably'engage threaded apertures in the block. An arcuate flange 22, forming part of the plate l4, extends about a portion of theperiphery of the block ill and this flange is secured to an arcuate flange 24 at the inner end of a front arm 26 by fasteners 28.

The outer end of arm i6 is provided with lateral projections 30 that will extend behind and in front of the saw being swaged and the outer endof the arm [6 supports a hand grip 32 to which there is removably secured a back pressure foot 34 that parallels the arm l6. The outer end of arm 26 adjustably supports a front pressure foot 36 that normally parallels arm 26 and which is'coplanar with pressure foot 34, whereby the pressure feet may rest upon the toothed edge of a saw with the block straddling the toothed edge.

A bearing 38 is removably secured to the outer periphery of the block I0 and. comprises a mounting flange 40 that is secured by fasteners 42 in a fiat recess 44 in the outer periphery of the block it. The bearing 38 also includes a pair of longitudinally spaced, co-axial sleeve sections 46 that are connected rigidly to the flange 40 by webs 48. r Sleeve sections 46 rotatably support a short shaft 50 whose ends project outwardly beyond the'sleeve sections 46. The hub portion 52 of a lever 54 receives the central portion of shaft 56 and is suitably keyed thereto, the lever being located between the adjacent ends of the sleeve sections, whereby the shaft may be rotatedfupon manually swinging the lever.

A die holder 56 is supported for rotation ad jacent'one side of the block 10. This die holder includes an arm 58 having a bifurcated end 60 that pivotally supports a sleeve 62 between its furcations. The end of the arm 58 remote from the bifuracted end 60 is formed with an opening that accommodates the threaded end-of a holding member 63. A nut 64 is threaded on the threaded end of member 63 to hold the same to the arm 58 and a die D is suitably held in the axial bore in the member 63 and: extends through an opening 66 in the block III that intersects the slot l2 as shown in Figure 5'.

Means is provided for connecting the dieholder to one end of the shaft50. This means assumes the form of a link element 68 having oneend keyed over one exposed end of the shaft 56. The Y 3 other end of the link element is bifurcated to receive therein the eye end "iii of a rod 12 that is pivoted to the link element by a pin i l. Rod 72 is sTidably received in a transverse aperture in the central part of sleeve 62 and threadingly carries abutments '36 for engaging the sleeve 52 in order to rotate the die holder '56.

The block H] is provided with a pair of aligned internally threaded openings lsand 30 that receivably en a e companion clamping members or screws 82 and 84 as shown in Figure l. The

openings 18 and 8G intersect slot i2 and the mombers 82 and 84 are movable into and out of the slot I2, the member 82 being initiallyadjusted 1 1 and the member 84 being adjusted by a'mecha: nism during operation of the tool, Which'm'echa nism will now be described The elongated multi-sided end 36 of the member 84 fits into a corresponding multisided bore and its ends enter accommodating apertures in V theflange Sit and the arm 94.

A pin '98 carried by the flange 96 extends under and parallels the sleeve 52 and will be engaged by a lug .mo on arm 94 as the arm St is rotated in one direction. One of the fasteners it is formed with an angulated stop forming end E32 that'will be engaged by arm as to limit swinging movement of the latter toward the back arm l5. 'flhe outer end of arm. 94"supports a laterally projecting roller or'headed pin, Hid on whose shank is positioned a washer it having a peripheral tooth receiving notch 63 for a purpose later to be described.

Means is provided for rotating the member "8% whereby a saw may be selectively held between andreleased from the screw 32 and member 84. This means consists of a cam Hdthat is keyed on'the other end of the shaft 5d. The cam H9 has an outer edgei ii: forming a track forroller .164 and a'grcove I it in its outer face also formin atrack for'the roller mi. 7 7

.QA finger H6 forms part of the cam lifl'and supports a catch H8 including a spring lfiflythat will prevent reentrance of the roller idliin 'the groove i Hi after the roller has passed completely through the groove 5 id. Thesprin'g- 25 is secured to ancl coi-led about a fastener l22'of thecatch and;inc1ud'es an arouate portion 'Hdextending across one end ofthe groove 1 i l and terminating inalip or abutment r25 for rollerllld.

The face of the cam i it? having .thegroove hfl isforrned with a protuberance ortooth E23 for engagingthe-previously mentioned notch "1G8 whereby the pin or roller may have sufficient clearance to pass through the curved groovell t. A; stop holder tilt secured to block it adjust; ably carries a set screw 32 that will limit swinging 'movementof the member 58 toward the sup-,- ort a m it v -;In lpractical'use of the present invention, the toothed edge of the saw is placed inslot i2 and the pressure feet 34 and etjrest upon the toothed edge: of the saw. Thehandleorrlever'fi l is positioned in its front position and toward arm 26 as shown in Figure 2. r 1 When lever '54 is pulled back toward arm [6 link member 68 swings forwardly toward arm 2:6 and abutments SE6 engage sleeve :62 to swing, the

spring.

the spring 98 moves arm Q4 backward until pin 4 die holder 56 forwardly whereupon the die D swages the saw tooth.

During the backward movement of lever 54 and prior to actuation of the die holder sufficiently to swage the saw tooth, the pin Hi l passes along edge H2 of cam H0. The arm lie is thus rotated forward and is held in a forward position until lever 54 is moved almost to its extreme back position. Since arm 94 is connected to clamp screw 34 by torsion spring 95, the screw 84 is secured against the saw and held there by the When lever 55 is pulled completely back,

we enters curved groove l M. ,Aslevert i is moved forwardly, pin H34 passes "along curved slot or groove lid and passes through catch H3.

The catch prevents return of the pin I04 in groove H4. The safety tooth on the cam and the slot H38 in Washer we facilitate the passage of the pin [t l through the groove Hi3. While-the pin its is passing through the groove M6,; the clamp screw M is unscrewing.

Having described the invention, what is claimed asnew is: a

l; :A single. lever saw swage comprisinga swage block-.having' a peripheral slot therein adapted toaccommodate the toothed edge of a saw, a bearing supported on the block and disposed perpendicular to the slot, .a shaft rotatably mounted in the bearing, a lever secured to the shaft for rotating the latter, a die holder rotatably mounted on said block, said block having an opening intersecting said slot and adapted to rotatably receive a die carrier by the holder, means disposed on one side of the block connecting one end of shaftto said holder for rotating the holder swinging of the shaft, a clamping member, said ole-cl; having another opening intersecting the slot and receiving the clamping member; and means disposed on the other side of the block connecting the clamping member to the other end of the shaft forrnovement of the clamping memberas the lever is swung, said last mentioned connecting means including a cam secured to the shaft and-a roller attached to the clamping member engaging the cam.

' 2. A single lever saw swage comprising a swage blochhaving a peripheral slot therein adapted to receive the toothed edge of a saw, a bearing supported onlthe block and disposed perpendicular to the slot, said bearing having a pair of co-axial longitudinally spaced sleeve sections, a shaft rotatably supported in said sleeve sections, a lever secured to the shaft between the adjacent ends of the sleeve sections for rotating the shaft,

block ha fing a opening therein intersecting' t he slot, a die holder rctatably supported on oneside of the bloc-hand adapted to hold a die that is estendedthrough the or -ng and into the slot, means conn sting one end of the shaft to" the die holder to rotate the latter in response to swinging movement or the lever, a clamping member'- carried by the other side of the block and movable into and out of the slot, and means operatively connecting the other end of the shaft to the clamping memberfor selectively moving the clamping member into and out of the slot asthe leveris manuallyswung.

3,The combination 'of;- clairn 2 wherein said meansconnecting said shaft to said die holder includes an arm projecting laterally from said shaft, alinlr pivoted to'the arm and slidably secured to the die 110163113 116. an abutment on the link adapted to engage and rotate the die holder as the lever is rotated to move the armtoward the die holder.

4. The combination of claim 2 wherein said block is provided with a threaded opening receivably engaging said clamping member, said. means connecting said clampingmember to said shaft including a sleeve rotatable with said clamping member, a link member rotatable on the sleeve, and a torsion spring about the sleeve and terminally secured to the sleeve and the link member.

5. The combination of claim 4 wherein said means connecting said clamping member to said shaft includes a roller supported on the link member, a cam secured to and rotatable with the 1 shaft and engaging the roller as the shaft is rotated by the lever in order to impart rotation to 6. The combination of claim 5 wherein said 7 cam is provided with-an outer edge riding against the roller as the lever is swung in one direction,

said cam being provided with a groove receiving the roller as the lever is rotated in an opposite direction.

7. The combination of claim 6 and a catch restricting reentrance of the roller in the groove after the roller has passed completely through the groove and toward .said outer edge.

8. The combination of claim 7 and interconnectin'g means between the link member and the cam, said interconnecting means comprising a washer carried by the link member having a peripheral notch and a tooth on the cam adapted to enter the notch upon rotation of the lever to permit the roller to pass through the groove.

- DON DABOLL;

References Cited in the file of this patent v UNITED STATES PATENTS Number Name Date 326,360 7 Ward Sept. 15, 1885 350,853 Ward Oct. 12, 1886 818,179 Lipsey Apr. 17, 1906 941,131 Cross Nov. 23, 1909 983,427 Carroll Feb. 7,- 1911 992,135 McKam May 9, 1911 1,716,241 I Raimann June 4, 1929 

